GB2056797B - Earth leakage protection devices - Google Patents

Earth leakage protection devices

Info

Publication number
GB2056797B
GB2056797B GB8016647A GB8016647A GB2056797B GB 2056797 B GB2056797 B GB 2056797B GB 8016647 A GB8016647 A GB 8016647A GB 8016647 A GB8016647 A GB 8016647A GB 2056797 B GB2056797 B GB 2056797B
Authority
GB
United Kingdom
Prior art keywords
earth leakage
protection devices
leakage protection
earth
devices
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB8016647A
Other versions
GB2056797A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trident Equipment Ltd
Original Assignee
Trident Equipment Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trident Equipment Ltd filed Critical Trident Equipment Ltd
Priority to GB8016647A priority Critical patent/GB2056797B/en
Publication of GB2056797A publication Critical patent/GB2056797A/en
Application granted granted Critical
Publication of GB2056797B publication Critical patent/GB2056797B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
GB8016647A 1979-05-29 1980-05-20 Earth leakage protection devices Expired GB2056797B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8016647A GB2056797B (en) 1979-05-29 1980-05-20 Earth leakage protection devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7918540 1979-05-29
GB8016647A GB2056797B (en) 1979-05-29 1980-05-20 Earth leakage protection devices

Publications (2)

Publication Number Publication Date
GB2056797A GB2056797A (en) 1981-03-18
GB2056797B true GB2056797B (en) 1983-01-06

Family

ID=26271672

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8016647A Expired GB2056797B (en) 1979-05-29 1980-05-20 Earth leakage protection devices

Country Status (1)

Country Link
GB (1) GB2056797B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT387675B (en) * 1987-04-02 1989-02-27 Cti Ges Zur Pruefung Elektrote Fault current protection switch with short delay
IT1247630B (en) * 1990-11-08 1994-12-28 Zanussi Elettrodomestici DIFFERENTIAL TYPE ELECTRONIC SAFETY DEVICE FOR HOUSEHOLD APPLIANCES
CN101673925B (en) * 2008-09-12 2013-06-05 西门子公司 Control device and control method for residual current circuit-breakers
CN101741049B (en) * 2008-11-20 2013-04-17 西门子公司 Control device and control method for residual current circuit breakers
UA99796C2 (en) * 2011-09-19 2012-09-25 Частное Акционерное Общество "Донецксталь" - Металлургический Завод" Device for protection against leakage currents in mine electric networks
CN107819320A (en) * 2017-11-09 2018-03-20 无锡华润矽科微电子有限公司 A type low-voltage leakage protector circuits

Also Published As

Publication number Publication date
GB2056797A (en) 1981-03-18

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee